Metallic packing.



No. 854,400. PATENTED MAY 21, 1907. W. M. BROOKE.

METALLIC PAGKIN G.

APPLICATION FILED APR. 30. 1906.

Wmv5ss5s INVEN r09,

AZ OPAILK UNITED STATES PATEN OEEIOE.

WILLIAM M. BROOKE, 'OF NEW YORK, 'N. YI, AssIeNO BY DIRECT AND NEW ERA METALLI PACKING MANU- YO K, N. Y., A CORPORATION OF NEW MESNE ASSIGNMENTS, TO THE FAOTURIN G COMPANY, OF NEW YORK.

METALLIC FPACKINIG.

- Patented May 21, 1907.

Application filed April 30,1906. Serial No. 314,466.

To all whom it may concern: I

Be it known that I, WILLIAM M. BROOKE, of the borough of Manhattan, city and State of New York, have invented a certain new and useful Improvement in Metallic Packing, of Which the following is a specification.

The present invention relates to means for imparting to a metallic packing such a degree of resilience or elasticity, as will render the packing without the use of setting-up springs or other auxiliary tension devices, applicable to the maintaining of a pressuretight joint under the conditions ordinarily met with in practice. This inherent elastic quality or capacity of ties in the surface with which the packing is in contact, or to irregularities, of motion of such surface, I attain by making the packing material in the form of'threads, filaments, shreds or turnings of more or less length and more or less in number, and forcibly compressing a sufficient quantity of the loose, unarranged turnings, etc. into the desired form. By the terms loose and unarrangedI mean that the threads etc., are not taken one by one and placed separately each in a definite relation to all the others, but I do not wish by the use of such terms to exclude the idea of making the interconnection between the separate threads as complete and thorough as may be practicable, as will appear.

' A further feature of the improvement involves the giving to such com ressed, more or.less open (as distinguishe *from solid) masses a sectional or parti-annular form to facilitate insertion and removal of the pieces of packing, and to eliminate the tendency of expansion to cause the forcible ipping of ch would Were the packing in the naturally result form of a solid sleeve.

These various features together with others included in the invention are illustrated in the drawing accompanying the present specification in which Figure 1 is a perspective view of sectional packing rings embodying the present invention, these rings being suitably assembled to embrace a rod to be acked. Fig. 2 is a similar view uponane arged scale of one of the sections or segments indicated in Fig. 1. Fig. 2 indicates a portion of a thread-length of a mass of whic the present packing is yielding to inequalipractical conditions,

- plural-part packing composed. Fig. 3 is a perspective view of a modlfication.

Similar characters of reference designate corresponding parts in all figures.

for instance it is adapted to the packing of the metallic packings are applicable.

In the manufacture of my improved packfirst given an attenuated, a portion of a length of Various means may be used for this purpose; for

ing the metal-is thread-like form which is indicated by 2 in Fig. 2*.

instance, lathe turnings may for convenience piston'rods of engines, pump plungers, etc. and in general. to all purposes to which be employed. -Lathe turnings may be used without subjecting them to further treatment, under conditions in which the nature of the metal or alloy used for the packing, or

the character of the turning tool employed, is

such that in forming the turnings the latter as they separate from the stock, twist and turn in curves and spiral forms, break off into lengths of greater or less linear-dimension one-length twisting into and connecting with another etc., (as often noticed in lathe turnings). With the use of metals and alloys and a character of turning tools other than that above indicated, however, it is necessary to separate a long straight thread etc. coming from the lathe, into short lengths and in the absence of the interconnection being thoroughly effected at the time of forming in the lathe, to subsequently by intertwisting, bending etc., connect them with each as inextricably as practicable. The more thorough this connection, the better do I find that the compacted mass preserves its integrity and wears and hence ordinary lathe turnings, unless of a nature as above will not answer the purpose. In other words it is necessary in order to obtain satisfactory results, that practicably each thread length, especially on the outer surface of the packing should be interconnected with one Or more other thread lengths and thus at some portion of its length extend at an angle to the inner face of the section.

I prefer, as a result of experiment under to use a comparatively soft metal for the manufacture ofthe present section, such, for in IOC IOK

, stance, as lead, an alloy thereof, copper, etc.,

the nature of the metal or of the constitution of the alloy, varying with the conditions and in a condition as above explained a quantity of the same is then forcibly compressed so as to assume a compacted mass of the desired shape. Such a mass, however, is distinguished from a solid body of the same shape, since by reason of the intervening spaces, more or less freedom exists for the parts to yield slightly without destroying the integrity of the general shape given as a whole to the loose interconnected threads by pressure. The existence of a considerable elastic property in the mass is evident, suflicient in fact to hold it pressure-tight against the piston rod, etc, without the use of springs, orthe like, despite the inequalities in the rod surface or irregularities of movement. Cavities, scorings, etc. in the rod tend to become filled up by the soft metal and the rod, even though rough at the start, eventually acquires a smooth surface.

Ordinary piston rod packing is preferably made in sectional or segmental form, see 3, in order. to facilitate the introduction of the compressed pieces and their removal from the stuffing box and where a number of rings,

encircling the rod are used they will of course break joints as indicated in Fig. 1. Moreover this sectional or segmental form has the advantage over a sleeve form of packing, as being the only practical form where a good nondeaking packing is desired since a sleeve or unbroken annulus made as by the compression of a mass of interconnected threads will grip the packed rod so tightly, by expansion of the parts, as to cause the destruction of the sleeve.

While I have heretofore described the present packing composed wholly of a mass of metallic threads compressed to form, I do not wish to limit myself to their use alone as the resilient property characteristic of the compacted mass may be made use of to hold a packing shell or face, such as 4, up

against the rod, this shell being embedded in a compressed backing 5.

Having described my invention, I claim 1. As a new article of manufacture, an 1nsertible and removable packing ring comprising a plurality of parti-annular pluralpart sections each embodying a pressurecompacted quantity of separate interconnected threads or filaments of soft metal, practically each of such separate threads or filaments having been first specially treated to thoroughly and as inextricably as possible intertwist and interconnect it with others and a sufficient quantity of the interlaced mass having afterward and prior to insertion in thestufling box been forcibly compressed to a parti-annular form possessing a maximum of integrity and resilience by reason of the non-p arallelism of the constituent threads.

2. As a new article of manufacture, a packing section comprising a backing which consists of a pressure-compacted mass of promiscuously deposed metallicfilaments practically each of which filaments intertwists with another to thereby constitute a body of closely disposed interconnected filaments substantially each of which extends at some portion of its length at an angle to the inner face of the backing, and a connected shell or facing adapted to press against the packed rod.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM BROOKE.

Witnesses:

PIERsON L. WELLS, GUY C. FRIsBIE. 

